044903.5MR [LITTELFUSE]
Surface Mount Fuses NANO2® > Slo-Blo® > 449 Series; 表面贴装保险丝NANO2® \u003e SLO- Blo® \u003e 449系列型号: | 044903.5MR |
厂家: | LITTELFUSE |
描述: | Surface Mount Fuses NANO2® > Slo-Blo® > 449 Series |
文件: | 总3页 (文件大小:193K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
Surface Mount Fuses
NANO2® > Slo-Blo® > 449 Series
PS
E
449 Series Fuse
Description
The lead free NANO2 Slo-Blo® fuse is RoHS compliant,
Halogen Free and 100% lead-free. This product is fully
compatible with lead-free solder alloys and higher
temperature profiles associated with lead-free assembly.
The Slo-Blo® design has enhanced inrush withstand
characteristics over the NANO2 Fast-Acting Fuse. The unique
time delay feature of this fuse design helps solve the
problem of nuisance “opening” by accommodating inrush
currents that normally cause a fast-acting fuse to open.
Features
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Agency Approvals
Free
temperature range
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AGENCY
AGENCY FILE NUMBER
E10480
AMPERE RANGE
375mA - 5A
de-rating
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ratings available
PS
E
NBK030205
1A - 5A
Applications
Secondary protection for space constrained applications:
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Electrical Characteristics for Series
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% of Ampere
OpeningTime
4 hours, Minimum
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Rating
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100%
equipment
200%
300%
800%
1 sec., Min.; 60 sec., Max.
0.2 sec., Min.; 3 sec., Max
0.02 sec., Min.; 0.1 sec., Max.
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protection
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Electrical Specifications by Item
Max
Agency Approvals
Ampere
Rating
(A)
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
Voltage
Interrupting
Rating
Amp Code
PS
E
Rating
(V)
I2t (A2sec)
0.375
0.500
0.750
1.00
.375
.500
.750
001.
01.5
125
125
125
125
125
125
125
125
125
125
125
1.5130
0.7633
0.4080
0.2516
0.1186
0.0708
0.0400
0.0352
0.0261
0.0227
0.0171
0.088
0.258
0.847
1.76
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
50 amperes @125 VAC/
VDC
1.50
4.70
2.00
2.50
3.00
3.50
4.00
5.00
002.
02.5
003.
03.5
004.
005.
6.76
PSE: 100 amperes
@100 VAC
13.18
19.55
32.70
40.80
59.59
Notes: - l2t calculated at 8ms. Resistance is measured at 10% of rated current, 25ºC
© 2012 Littelfuse, Inc.
449 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/449.html for current information.
Revised: June 3, 2012
Surface Mount Fuses
®
NANO2® > Slo-Blo > 449 Series
Temperature Rerating Curve
AverageTime Current Curves
1000
100
10
1
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.1
0.01
0
1
10
100
CURRENT IN AMPERES
Soldering Parameters
tP
Reflow Condition
-Temperature Min (Ts(min)
Pb – Free assembly
TP
Critical Zone
Ramp-up
TL to TP
)
150°C
TL
Pre Heat -Temperature Max (Ts(max)
)
200°C
tL
TS(max)
-Time (Min to Max) (ts)
60 – 120 secs
Ramp-down
Average ramp up rate (LiquidusTemp
(TL) to peak
Preheat
3°C/second max.
TS(min)
tS
TS(max) toTL - Ramp-up Rate
3°C/second max.
217°C
-Temperature (TL) (Liquidus)
Reflow
25
time to peak temperature
(t 25ºC to peak)
-Temperature (tL)
60 – 90 seconds
250+0/-5 °C
Time
PeakTemperature (TP)
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Ramp-down Rate
5°C/second max.
8 minutes max.
260°C
Time 25°C to peakTemperature (TP)
Do not exceed
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Temperature,
3 seconds max.
Wave Soldering Parameters
© 2012 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/449.html for current information.
449 Series
Surface Mount Fuses
NANO2® > Slo-Blo® > 449 Series
Product Characteristics
Body: Ceramic
Terminations:ꢀꢀ(PMEꢂQMBUFEꢀ$BQT
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Condition B, 5 cycles, -65°C to
125°C, 15 minutes @ each extreme
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sawtooth wave 6ms duration, 3
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Materials
Thermal Shock
Mechanical Shock
Vibration
Product Marking
Brand, Amperage Rating
-55°C to 125°C
Operating
Temperature
Moisture
Sensitivity Level
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Solderability
Moisture Resistance
Salt Spray
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Insulation
Resistance (after
Opening)
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A (10,000 ohms minimum)
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Condition B (48hrs)
Resistance to Soldering
Heat
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condition B (10 sec at 260°C)
Dimensions
Part Numbering System
6.86
(.270")
6.10
(.240")
0449 001. M R
SERIES
F
3.15
(.124")
T
1 A
AMP Code*
Refer to Electrical charac-
teristics table
1.45
(.057")
2.95
(.116")
1.96
(.077")
2.69
(.106")
QUANTITY Code
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Recommended pad layout
2.69
(.106")
PACKAGING Code
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*Example:
0.375 Amp product is 0449.375MR
(1 amp product shown above).
Packaging
Quantity &
Packaging Option
12mmTape and Reel
Packaging Specification
Quantity
Packaging Code
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1000
MR
© 2012 Littelfuse, Inc.
449 Series
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/449.html for current information.
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